Have a look at a free set of high-quality sci-fi themed assets for environments in UE4. Free of charge in December. 

The set is meant for high-end desktops, featuring a number of tools to set up great-looking sci-fi themed environments. You can create shiny sci-fi corridors or design old and abandoned Dead Space-style scenes.

It features static meshes with face weighted normals, tiling base materials, and detail decals for the best possible visual quality.

Base materials include Base Roughness, Roughness variation, Material color, color variation, Material variation, and more.

Features

• High-quality static meshes with face weighted normals
• Highly customizable base materials
• Decal textures for details
• Fully PBR textures sourced from scanned data
• Variation masks used for roughness and material variation

You can learn more and get the pack here.